/*
 * Copyright 2011 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.drools.core.factmodel.traits;


import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Retention(value = RetentionPolicy.RUNTIME)
@Target( value = ElementType.TYPE)
public @interface Trait {

    Class impl() default NullMixin.class;

    class NullMixin {
        private NullMixin() {}
    }

    boolean logical() default false;

    MixinConflictResolutionStrategy mixinSolveConflicts() default MixinConflictResolutionStrategy.DECLARATION_ORDER;

    enum MixinConflictResolutionStrategy {
        DECLARATION_ORDER, ERROR_ON_CONFLICT
    }
}
